Allen-Bradley 1791 16A0/B, 0A16/B, 8AC/B, 8AR/B, 32A0/B, 0A32/B, 16AC/B, 24A8/B, 24AR/B, 16B0/B, 0B16/B, 8BC/B, 8BR/B, 32B0/B, 0B32/B, 16BC/B, 24B8/B, 24BR/B Discrete Block I/O User manual

1791 16A0/B, 1791 0A16/B, 1791 8AC/B, 1791 8AR/B, 1791 32A0/B, 1791 0A32/B, 1791 16AC/B, 1791 24A8/B, 1791 24AR/B, 1791 16B0/B, 1791 0B16/B, 1791 8BC/B, 1791 8BR/B, 1791 32B0/B, 1791 0B32/B, 1791 16BC/B, 1791 24B8/B, 1791 24BR/B are small, self-contained remote I/O devices complete with power supply, programmable controller interface, input/output connections and signal conditioning circuitry. Connect sensors and actuators to the module and use the remote I/O cable to connect the block I/O to your programmable controller.

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Allen-Bradley 1791 Discrete Block I/O User Manual | Manualzz

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Key features

  • Complete I/O Interface
  • Compatible with PLC-2, PLC-3, PLC-5/250, PLC-5 and SLC
  • Removable Terminal Strip
  • Switch Assembly
  • Status Indicators
  • Asynchronous Data Transfer

Frequently asked questions

Refer to Table 3.A for acceptable combinations of processor and block I/O, including maximum capacity and network distance based on baud rate.

Connect the wiring to the removable terminal block, ensuring the lower row of screws is positioned towards the outside of the module. Refer to the wiring diagrams for specific pin numbers.

Output fusing is recommended. Refer to Table 2.B for recommended fuse types and ratings based on the circuit type (ac or dc).

Mount the blocks vertically with a minimum of 2” between blocks to ensure proper cooling air flow. Refer to Figure 3.1 for the mounting dimensions.

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